CRESSON, Pa. – The general public is invited to attend a panel discussion on Marcellus  Shale Drilling in the Alleghenies. Sponsored by chemistry students at Mount Aloysius College, the event is slated for Thursday, April 19^th at 3:30 p.m. Panelists include J. Stephen Cleghorn, Ph.D.; David Field, Sr., geologists and director of geologic services for P. Joseph Lehman, Inc., Consulting Engineers, Hollidaysburg, Pa. and Dan Lapato, deputy director for external affairs for the Pennsylvania Department of Environmental Resources. The discussion will be held in the McAuley Hall Meeting Rooms, first floor, McAuley Hall.